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vaieri [72.5K]
3 years ago
10

True or false: When testing the difference between two population means it is unlikely that one would know the value of the popu

lation variances.
Mathematics
1 answer:
erma4kov [3.2K]3 years ago
3 0
The answer is True
………
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Officials project that between 2010 and 2050, the population of a certain city will drastically change. The model below gives th
MaRussiya [10]

Answer:

In the year 2010, the population of the city was 175,000

Step-by-step explanation:

If we rewrote this as a linear expression in standard form (it is linear, btw), it would look like this:

P(t)=\frac{11}{2}t+175

The rate of change, the slope of this line, is 11/2.  If the year 2010 is our time zero (in other words, we start the clock at that year), then 0 time has gone by in the year 2010.  In the year 2011, t = 1 (one year goes by from 2010 to 2011); in the year 2012, t = 2 (two years have gone by from 2010 to 2012), etc.  If we plug in a 0 for t we get that y = 175,000.  That is our y-intercept, which also serves to give us the starting amount of something time-related when NO time has gone by.

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3 years ago
What is the slope-intercept equation for the line below 
jek_recluse [69]

Step-by-step explanation:

slope/gradient

1 - (-4) / 4 - 0 = 5/4

y-intercept is -4 (this is the dot on y)

so the line equation is

y = 5/4x - 4 answer d

6 0
3 years ago
Amy's math notebook weighs 1/2 pound, her science notebook weighs 7/8 pound, and her history notebook weighs 3/4 pound. What are
QveST [7]
1/2 is equal to 50%, 3/4 is equal to 75%, and 7/8 is equal to 87.5 percent. Therefore, the order is 1/2, 3/4, and then 7/8.
4 0
4 years ago
Read 2 more answers
HELP PLZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ
kifflom [539]

Answer: x ≥ -4 (in words: x is greater than or equal to -4)

Step-by-step explanation:

The number line shows all values greater than -4 being shaded in, meaning that x can be any of them.  In addition, the point at -4 itself is shaded in, showing that it is also a possible value for x.  

8 0
3 years ago
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-6/5-2/5v+4/15+1/3v please help
PtichkaEL [24]

Answer:

-14/15-1/15v

Step-by-step explanation:

First you make all of the fractions have the common denominator 15.

And then you have -18/15-6/15v+4/15+5/15v

Then you combine like terms to get -14/15-1/15v

5 0
3 years ago
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